Unraid shell script for getting stats into Grafana

Continuing the documentation effort. This is a shell script you run from Unraid in a cron job to feed stats to InfluxDB. You can then present them in Grafana. Note about that, I was having a lot of trouble getting the Grafana graphs to present correctly for anything coming from this script. I had to change the Fill from “null” to “none” in the graph. Not sure why that’s happening, but “none” gets it to behave just like everything else.

## Assembled from this post: https://lime-technology.com/forum/index.php?topic=52220.msg512346#msg512346